jonathan alter, richard wolffe, thank you. >>> the clock is ticking as we get closer to the main event. much more from denver in just a moment. >> i've also been working on some, that's what she said zingers. for instance, when obama is talking during the debate, i'll just interrupt him and say, that's what she said? gets him every time. [ rosa ] i'm rosa and i quit smoking with chantix. when the doctor told me that i could smoke for the first week... i'm like...yeah, ok... little did i know that one week later i wasn't smoking. [ male announcer ] along with support, chantix is proven to help people quit smoking. it reduces the urge to smoke. some people had changes in behavior, thinking or mood, hostility, agitation, depressed mood and suicidal thoughts or actions while taking or after stopping chantix. if you notice any of these stop taking chantix and call your doctor right away. tell your doctor about any history of depression or other mental health problems, which could get worse while taking chantix. don't take chantix if you've had a serious allergic or skin reaction to it. if y